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參數(shù)資料
| 型號： | L4973V3.3 |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 5.5 A SWITCHING REGULATOR, 300 kHz SWITCHING FREQ-MAX, PDIP18 |
| 封裝： | LEAD FREE, PLASTIC, DIP-18 |
| 文件頁數(shù)： | 23/28頁 |
| 文件大?。?/td> | 637K |
| 代理商： | L4973V3.3 |
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Pin settings
L4973
4/28
2.2
Pin description
Note:
1
The maximum power dissipation of the package must be observed.
Table 1.
Pin description
N° Pin
Name
Description
DIP-18
SO-20
11
12
COMP
E/A output to be used for frequency compensation
10
11
INH
A logic signal (active high) disables the device (sleep
mode operation). If not used it must be connected to
GND; if floating the device is disabled.
9
10
BOOT
A capacitor connected between this pin and the output
allows to drive the internal D-MOS.
18
20
SYNC
Input/Output synchronization.
7,8
8,9
VCC
Unregulated DC input voltage
2,3
OUT
Stepdown regulator output.
12
13
VFB
Stepdown feedback input. Connecting the output
directly to this pin results in an output voltage of 3.3 V
for the L4973V3.3 and 5.1 V for L4973V5.1. An external
resistive divider is required for higher output voltages.
For output voltage resistive divider is required for higher
output voltages. For output voltage less than 3.3 V, see
Note: 1 and Figure 33.
16
18
V5.1
Reference voltage externally available.
4,5,6
13,14,15
4,5,6,7
14,15,16,17
GND
Signal ground
1
OSC
An external resistor connected between the unregulated
input voltage and Pin 1 and a capacitor connected from
Pin 1 to ground fixes the switching frequency. (Line feed
forward is automatically obtained)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L4973V33-L4973V51 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.5A STEP DOWN SWITCHING REGULATOR |
| L4973V5 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.5A STEP DOWN SWITCHING REGULATOR |
| L4973V5.1 | 功能描述:直流/直流開關(guān)調(diào)節(jié)器 5.1V 3.5A Step-Down RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| L4973V51 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.5A STEP DOWN SWITCHING REGULATOR |
| L4974 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:3.5A SWITCHING REGULATOR |
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